US4566345A - Tool carrier assembly - Google Patents
Tool carrier assembly Download PDFInfo
- Publication number
- US4566345A US4566345A US06/633,338 US63333884A US4566345A US 4566345 A US4566345 A US 4566345A US 63333884 A US63333884 A US 63333884A US 4566345 A US4566345 A US 4566345A
- Authority
- US
- United States
- Prior art keywords
- guide rails
- carrier
- tool
- tool carrier
- bearings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004033 plastic Substances 0.000 claims abstract description 25
- 229920003023 plastic Polymers 0.000 claims abstract description 25
- 239000004677 Nylon Substances 0.000 claims description 12
- 229920001778 nylon Polymers 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004417 polycarbonate Substances 0.000 claims description 9
- 229920000515 polycarbonate Polymers 0.000 claims description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 description 10
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 5
- 229920002292 Nylon 6 Polymers 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/02—Framework
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S384/00—Bearings
- Y10S384/90—Cooling or heating
- Y10S384/908—Nylon or polytetrafluorethylene
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
- Y10T74/18576—Reciprocating or oscillating to or from alternating rotary including screw and nut
- Y10T74/18648—Carriage surrounding, guided by, and primarily supported by member other than screw [e.g., linear guide, etc.]
Definitions
- This invention relates to a tool carrier assembly having anti-friction bearings which must be reliable in operation without the impedance of unwanted friction or wear.
- a printer head is caused to reciprocate in a fixed path back and forth relative to a platen or roll which moves plain paper, graph paper or the like transversely of the path of the printer.
- the printer head, or any other tool for that matter is normally supported on a carrier which translates back and forth between fixed limits relative to the path of movement of the paper. Reciprocating motion is imparted to the carrier and hence to the printer head or tool, often by a lead screw which is rotatable in both clockwise and counterclockwise directions in a fixed time sequence.
- the lead screw Through threaded engagement with the carrier, the lead screw causes the carrier to move back and forth on guide rails which are fixed relative to the path of movement of the paper.
- the tool is moved by the carrier to engage the workpiece, or more specifically in the case of a printer, to imprint the paper.
- roller or ball bearings which, while they do reduce friction, create other problems, one of which is the requirement for lubrication and another being a relatively high cost relative to the other machine components.
- the guide rails are made of stainless steel which is precision machined and processed to a highly polished exterior surface and having close radial tolerance. This is not only expensive but time consuming in manufacturing.
- a tool carrier assembly comprising a carrier which supports a tool for reciprocating motion on a pair of guide rails.
- the carrier has bearings which are engageable with the guide rails as motor means reciprocate the carrier back and forth along the rails.
- the guide rails and the bearings are made of use of dissimilar plastics.
- Each guide rail is constructed of a solid core in a sheath of plastic surrounding it and constituting its outer surface. The plastic is shrunk fit around the core, and its surface is centerless ground to produce a smooth, uniform, low-friction surface.
- the dissimilar plastics results in substantially lower wear rates and coefficients of friction as distinguished from when both the bearings and the guide rails are made of the same plastic material.
- the plastics may, for example, be nylon and acetyl or nylon and polycarbonate.
- Applicants have found that while nylon and acetyl or polycarbonate as the dissimilar plastics are highly satisfactory, the addition of filler material such as polytetrafluoroethylene (PTFE) has beneficial results in further reducing friction and wear.
- PTFE polytetrafluoroethylene
- FIG. 1 is a perspective schematic view of a tool carrier assembly including a carrier mounted for reciprocating motion on guide rails and which assembly illustrates features of the present invention.
- FIG. 2 is an end view of a guide rail and bearing taken in the direction of the arrow II on FIG. 1.
- a tool carrier assembly embodying features of the present invention is designated C and includes a tool carrier 2 mounting a support 4 which carries a tool 6 at its upper end.
- the tool carrier is represented by a rectangular block, and the support 4 and the tool 6 are schematically depicted as representing any tool but for purposes of illustration represents a printer head.
- Laterally of the tool carrier are a pair of guide rails 8 which are firmly attached to and supported at each end by a rigid support 10 (only one of which is shown) forming part of the machine frame.
- An auxiliary mounting means 18 is shown attached to one of the bearing supports 12 and is often employed to carry mechanisms ancillary to the tool. Being located laterally of the tool carrier on one side, the mounting means and the structure it supports often induces an uneven load on the tool carrier which intensifies both the friction between the bearings 14 and the guide rails 8 as well as their wear.
- Reciprocating linear motion is imparted to the tool carrier 2 by a threaded lead screw 20 which engages a mating threaded member 22 in the tool carrier.
- Motor means (not shown) causes the screw to be rotated alternately in both clockwise and counterclockwise directions by a computer-operated drive to effect direction reversal of the tool carrier 2.
- anti-backlash nut mechanism as disclosed in U.S. Pat. No. 4,249,426 may be employed to eliminate backlash between the screw and the tool carrier.
- the tool carrier and hence the tool, reciprocates relative to a workpiece W herein illustrated as a conventional roll supporting a sheet of paper.
- the workpiece W could, as well, be a cylinder to be machined and the tool 6 a cutting bit.
- the tool carrier 2 may be driven in its reciprocating path, for example, by a conventional wire and pulley mechanism (not shown) attached respectively to the tool carrier and drive means on the machine frame.
- each guide rail 8 comprises a core 28 of metal rod stock requiring no machining. Surrounding the core is a sleeve of plastic 30.
- the reason the guide rails are made of composite material is because were they made entirely of plastic, they would have a tendency to bow under the weight of the tool carrier resulting in non-linear motion of the tool.
- the core or inner rod 28 offers structural rigidity while the outer sleeve 30 provides a wear resistant, low friction bearing surface.
- the core could be made of glass or ceramic as long as it offers the necessary structural rigidity.
- Each guide rail 8 is made by extruding a plastic sleeve around the core 28 and allowing it to cool whereupon it shrinks into a tight non-moving relationship around the core. Were the plastic applied, for example, by sliding a sleeve over the rod and then shrinking it into engagement with the core, it is possible for air to be trapped between the sleeve and the core to form pockets resulting in bulges in the surface of the guide rail.
- the assembled composite guide rail is finished by centerless grinding to produce a uniform, cylindrical surface of high tolerance and low friction.
- the guide rail is shown to be circular cross section, it may, if desired, have other configurations as for example square, rectangular, or even in the form of an equilateral triangle.
- the core is one half inch diameter cold drawn steel.
- the outer diameter of the extruded plastic is approximately 0.53 inches whereby its initial wall thickness is 0.015 inches. After the centerless grinding process, the wall diameter of the plastic will be approximately 0.010 inches. Total diameter of the finished rod is approximately 0.520 inches.
- Bearings 14 carried by the bearing supports 12 are illustrated as circular sleeve bearings which are molded from a plastic material. Their inner diameters are circular in cross section to fit on the circular guide rail 8. The bearings would, of course, be formed complimentary to the guide rails whatever their cross sectional shape is.
- the guide rail sleeves are made of nylon and the bearings made of acetyl copolymer.
- the coefficient of friction between these members is lower than if both members were made of nylon or both of acetyl.
- the coefficient of friction is lower than if both members were made either of nylon or polycarbonate.
- PTFE polytetrafluoroethylene
- Applicants have formed the sleeves 30 of the guide rails 8 of nylon 6/6 and the bearings 14 of acetyl copolymer, each containing 20% PTFE. Furthermore, the bearings 14 can be interchanged with ones made of polycarbonate containing from 10 to 20% PTFE with similar good results, both with respect to having a low coefficient of friction and a comparatively low wear factor.
- the mechanism is assembled as shown schematically in FIG. 1 with the acetyl or polycarbonate bearings 14 riding on the composite guide rails 8 which have nylon sleeves 30 over steel rod stock.
- No lubrication is necessary; accordingly, there is no chance of a lubricant drying out and causing points of drag lengthwise of the rod, nor is there any chance of a lubricant getting onto the workpiece or paper.
- the tool carrier 2 is reciprocated back and forth across the guide rails 8 while the tool 6 performs its operation. The motion of the tool carrier is imparted by alternate clockwise and counterclockwise rotation of the lead screw 20.
- the low wear factor and low coefficient between the nylon and the acetyl or polycarbonate bearing is such that the little or no wear or drag takes place over long periods of time even when eccentric loads are applied through the mounting means 18.
- the presence of the steel core 28 in the guide rails offers adequate structural rigidity to assure that the tool carrier's path does not deviate from linear.
Landscapes
- Bearings For Parts Moving Linearly (AREA)
Abstract
Description
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/633,338 US4566345A (en) | 1984-07-23 | 1984-07-23 | Tool carrier assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/633,338 US4566345A (en) | 1984-07-23 | 1984-07-23 | Tool carrier assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US4566345A true US4566345A (en) | 1986-01-28 |
Family
ID=24539241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/633,338 Expired - Lifetime US4566345A (en) | 1984-07-23 | 1984-07-23 | Tool carrier assembly |
Country Status (1)
Country | Link |
---|---|
US (1) | US4566345A (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4836042A (en) * | 1987-07-27 | 1989-06-06 | Advanced Engineering Systems, Operations & Products, Inc. | System to convert rotary motion to linear motion |
US5012688A (en) * | 1989-02-24 | 1991-05-07 | Ellis Malcolm P | Sizing apparatus and proportional spacing mechanism |
US5090265A (en) * | 1987-07-27 | 1992-02-25 | Slocum Alexander H | System to convert rotary motion to linear motion |
US5325732A (en) * | 1989-12-15 | 1994-07-05 | Vogel Ferdinand L | Motion-transmitting combination comprising a castable, self-lubricating composite and methods of manufacture thereof |
US5601372A (en) * | 1995-06-05 | 1997-02-11 | Kerk Motion Products, Inc. | Vibration reducing brushing |
WO1998046433A1 (en) * | 1997-04-17 | 1998-10-22 | Kerk Motion Products, Inc. | Reinforced lead screw |
EP0874518A3 (en) * | 1997-04-25 | 1999-07-28 | Eastman Kodak Company | Wear resistant lathe bed scanning apparatus and method |
EP0875391A3 (en) * | 1997-04-25 | 1999-07-28 | Eastman Kodak Company | Wear resistant apparatus and method for translating a printing element relative to a frame |
US5937702A (en) * | 1998-04-14 | 1999-08-17 | Kerk Motion Products, Inc. | Spring bias wedge in reinforcing rail |
US6041671A (en) * | 1998-06-04 | 2000-03-28 | Kerk Motion Products, Inc. | Miniature anti-backlash nut assembly |
US6099166A (en) * | 1999-03-26 | 2000-08-08 | Kerk Motion Products, Inc. | Longitudinal stabilizer for vibration reducing bushing |
US6131478A (en) * | 1999-01-07 | 2000-10-17 | Kerk Motion Products, Inc. | Anti-backlash nut assembly |
US6240798B1 (en) | 1999-07-01 | 2001-06-05 | Kerk Motion Products, Inc. | Reinforced anti-backlash nut with graduated thread depth fingers |
US6415673B1 (en) | 1997-04-17 | 2002-07-09 | Kerk Motion Products, Inc. | Reinforced lead screw with anti-backlash nut |
US6422101B2 (en) | 1997-04-17 | 2002-07-23 | Kerk Motion Products, Inc. | Reinforced lead screw with springless anti-backlash nut |
US6467362B2 (en) | 1997-04-17 | 2002-10-22 | Kerk Motion Products, Inc. | Reinforced lead screw with spring biased anti-backlash nut |
US20050110828A1 (en) * | 2003-11-26 | 2005-05-26 | Fuji Xerox Co., Ltd. | Systems and method for dissipating heat from a fluid ejector carriage |
US20050178225A1 (en) * | 2004-02-17 | 2005-08-18 | Kerk Motion Products, Inc. | Long-span lead screw assembly with anti-backlash nut |
US20070295128A1 (en) * | 2006-05-19 | 2007-12-27 | Erikson Keith W | Lead screw actuator with torsional anti-backlash nut |
US20080115605A1 (en) * | 2006-11-16 | 2008-05-22 | Erikson Kenneth W | Motor assembly with anti-backlash nut and thermal insensitive mechanism |
US20090249910A1 (en) * | 2008-04-04 | 2009-10-08 | Kerk Motion Products, Inc. | Lead screw device |
JP2015116726A (en) * | 2013-12-18 | 2015-06-25 | セイコーエプソン株式会社 | Recording device |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB748864A (en) * | 1952-04-09 | 1956-05-16 | Glacier Co Ltd | Improvements in or relating to plain bearings |
GB757582A (en) * | 1954-11-05 | 1956-09-19 | Glacier Co Ltd | Plain bearing assemblies |
US2835540A (en) * | 1957-03-14 | 1958-05-20 | Gen Motors Corp | Guide bearing |
US2950149A (en) * | 1957-01-29 | 1960-08-23 | John B Thomson | Relatively reciprocable shaft and bearing |
US3072448A (en) * | 1961-02-16 | 1963-01-08 | Jamco Inc | Pivotal bearing assembly for connecting two relatively moving members |
US3243236A (en) * | 1963-07-25 | 1966-03-29 | John M Graham | Low-friction bearing pads |
US3479099A (en) * | 1967-11-20 | 1969-11-18 | Atwood Vacuum Co | Seat slide structures |
US3774983A (en) * | 1971-12-27 | 1973-11-27 | Us Navy | Low friction bearing-journal arrangement |
US3920293A (en) * | 1974-04-23 | 1975-11-18 | Hirokazu Takeuchi | Bearing made of plastics |
GB1436103A (en) * | 1972-01-28 | 1976-05-19 | Int Research & Dev Co Ltd | Bearings and bearing materials |
US4054337A (en) * | 1974-10-01 | 1977-10-18 | Textron Inc. | Low-friction fabric bearing |
GB1504568A (en) * | 1977-03-16 | 1978-03-22 | Glacier Metal Co Ltd | Structural bearing |
US4107381A (en) * | 1973-09-18 | 1978-08-15 | Rexnord Inc. | Composite article providing seamless fabric-lined bearings in multiple |
US4109978A (en) * | 1976-10-14 | 1978-08-29 | Electric Machinery Mfg. Co. | Electrically insulated sleeve bearing and method of making same |
US4193645A (en) * | 1973-06-13 | 1980-03-18 | Glacier Metal Company, Limited | Plain bearings |
US4198871A (en) * | 1978-02-23 | 1980-04-22 | Mfe Corporation | Transducer positioning apparatus |
US4312195A (en) * | 1978-09-01 | 1982-01-26 | Firma Sipra Patententwicklungs U. Beteiligungsgesellschaft Mbh | Dust-collecting system for circular knitting machine |
-
1984
- 1984-07-23 US US06/633,338 patent/US4566345A/en not_active Expired - Lifetime
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB748864A (en) * | 1952-04-09 | 1956-05-16 | Glacier Co Ltd | Improvements in or relating to plain bearings |
GB757582A (en) * | 1954-11-05 | 1956-09-19 | Glacier Co Ltd | Plain bearing assemblies |
US2950149A (en) * | 1957-01-29 | 1960-08-23 | John B Thomson | Relatively reciprocable shaft and bearing |
US2835540A (en) * | 1957-03-14 | 1958-05-20 | Gen Motors Corp | Guide bearing |
US3072448A (en) * | 1961-02-16 | 1963-01-08 | Jamco Inc | Pivotal bearing assembly for connecting two relatively moving members |
US3243236A (en) * | 1963-07-25 | 1966-03-29 | John M Graham | Low-friction bearing pads |
US3479099A (en) * | 1967-11-20 | 1969-11-18 | Atwood Vacuum Co | Seat slide structures |
US3774983A (en) * | 1971-12-27 | 1973-11-27 | Us Navy | Low friction bearing-journal arrangement |
GB1436103A (en) * | 1972-01-28 | 1976-05-19 | Int Research & Dev Co Ltd | Bearings and bearing materials |
US4193645A (en) * | 1973-06-13 | 1980-03-18 | Glacier Metal Company, Limited | Plain bearings |
US4107381A (en) * | 1973-09-18 | 1978-08-15 | Rexnord Inc. | Composite article providing seamless fabric-lined bearings in multiple |
US3920293A (en) * | 1974-04-23 | 1975-11-18 | Hirokazu Takeuchi | Bearing made of plastics |
US4054337A (en) * | 1974-10-01 | 1977-10-18 | Textron Inc. | Low-friction fabric bearing |
US4109978A (en) * | 1976-10-14 | 1978-08-29 | Electric Machinery Mfg. Co. | Electrically insulated sleeve bearing and method of making same |
GB1504568A (en) * | 1977-03-16 | 1978-03-22 | Glacier Metal Co Ltd | Structural bearing |
US4198871A (en) * | 1978-02-23 | 1980-04-22 | Mfe Corporation | Transducer positioning apparatus |
US4312195A (en) * | 1978-09-01 | 1982-01-26 | Firma Sipra Patententwicklungs U. Beteiligungsgesellschaft Mbh | Dust-collecting system for circular knitting machine |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5090265A (en) * | 1987-07-27 | 1992-02-25 | Slocum Alexander H | System to convert rotary motion to linear motion |
US4836042A (en) * | 1987-07-27 | 1989-06-06 | Advanced Engineering Systems, Operations & Products, Inc. | System to convert rotary motion to linear motion |
US5012688A (en) * | 1989-02-24 | 1991-05-07 | Ellis Malcolm P | Sizing apparatus and proportional spacing mechanism |
US5325732A (en) * | 1989-12-15 | 1994-07-05 | Vogel Ferdinand L | Motion-transmitting combination comprising a castable, self-lubricating composite and methods of manufacture thereof |
US5601372A (en) * | 1995-06-05 | 1997-02-11 | Kerk Motion Products, Inc. | Vibration reducing brushing |
US6202500B1 (en) | 1997-04-17 | 2001-03-20 | Kerk Motion Products, Inc. | Reinforced lead screw with anti-backlash nut |
WO1998046433A1 (en) * | 1997-04-17 | 1998-10-22 | Kerk Motion Products, Inc. | Reinforced lead screw |
US5913941A (en) * | 1997-04-17 | 1999-06-22 | Kerk Motion Products, Inc. | Reinforced lead screw |
US6422101B2 (en) | 1997-04-17 | 2002-07-23 | Kerk Motion Products, Inc. | Reinforced lead screw with springless anti-backlash nut |
US6467362B2 (en) | 1997-04-17 | 2002-10-22 | Kerk Motion Products, Inc. | Reinforced lead screw with spring biased anti-backlash nut |
US6415673B1 (en) | 1997-04-17 | 2002-07-09 | Kerk Motion Products, Inc. | Reinforced lead screw with anti-backlash nut |
EP0875391A3 (en) * | 1997-04-25 | 1999-07-28 | Eastman Kodak Company | Wear resistant apparatus and method for translating a printing element relative to a frame |
EP0874518A3 (en) * | 1997-04-25 | 1999-07-28 | Eastman Kodak Company | Wear resistant lathe bed scanning apparatus and method |
US5937702A (en) * | 1998-04-14 | 1999-08-17 | Kerk Motion Products, Inc. | Spring bias wedge in reinforcing rail |
US6041671A (en) * | 1998-06-04 | 2000-03-28 | Kerk Motion Products, Inc. | Miniature anti-backlash nut assembly |
US6131478A (en) * | 1999-01-07 | 2000-10-17 | Kerk Motion Products, Inc. | Anti-backlash nut assembly |
US6099166A (en) * | 1999-03-26 | 2000-08-08 | Kerk Motion Products, Inc. | Longitudinal stabilizer for vibration reducing bushing |
US6240798B1 (en) | 1999-07-01 | 2001-06-05 | Kerk Motion Products, Inc. | Reinforced anti-backlash nut with graduated thread depth fingers |
US20050110828A1 (en) * | 2003-11-26 | 2005-05-26 | Fuji Xerox Co., Ltd. | Systems and method for dissipating heat from a fluid ejector carriage |
US7192116B2 (en) * | 2003-11-26 | 2007-03-20 | Fuji Xerox Co., Ltd. | Systems and methods for dissipating heat from a fluid ejector carriage |
US20050178225A1 (en) * | 2004-02-17 | 2005-08-18 | Kerk Motion Products, Inc. | Long-span lead screw assembly with anti-backlash nut |
US7219570B2 (en) | 2004-02-17 | 2007-05-22 | Kerk Motion Products, Inc. | Long-span lead screw assembly with anti-backlash nut |
US20080022794A1 (en) * | 2004-02-17 | 2008-01-31 | Erikson Keith W | Long-span lead screw assembly with anti-backlash nut |
US7552657B2 (en) | 2004-02-17 | 2009-06-30 | Kerk Motion Products, Inc. | Long-span lead screw assembly with anti-backlash nut |
US20070295128A1 (en) * | 2006-05-19 | 2007-12-27 | Erikson Keith W | Lead screw actuator with torsional anti-backlash nut |
US20080115605A1 (en) * | 2006-11-16 | 2008-05-22 | Erikson Kenneth W | Motor assembly with anti-backlash nut and thermal insensitive mechanism |
US7891265B2 (en) | 2006-11-16 | 2011-02-22 | Haydon Kerk Motion Solutions, Inc. | Motor assembly with anti-backlash nut and thermal insensitive mechanism |
US20090249910A1 (en) * | 2008-04-04 | 2009-10-08 | Kerk Motion Products, Inc. | Lead screw device |
JP2015116726A (en) * | 2013-12-18 | 2015-06-25 | セイコーエプソン株式会社 | Recording device |
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AS | Assignment |
Owner name: KERK MOTION PRODUCTS, INC., MASSACHUSETTS Free format text: CHANGE OF NAME;ASSIGNOR:CHURCHYARD MOTION PRODUCTS, INC.;REEL/FRAME:009500/0522 Effective date: 19980731 Owner name: CHURCHYARD MOTION PRODUCTS, INC., NEW HAMPSHIRE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ERIKSON, KEITH W.;ERIKSON, KENNETH W.;REEL/FRAME:009764/0983 Effective date: 19980729 |
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AS | Assignment |
Owner name: KERK MOTION PRODUCTS, INC., NEW HAMPSHIRE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ERIKSON, KEITH W.;ERIKSON, KENNETH W.;REEL/FRAME:009737/0943 Effective date: 19990119 |